It might be hard to spot BMW's changes for the 2015 6 Series family at the 2015 Detroit Auto Show, but they are there. The biggest of the understated tweaks all come at the front end, but there is some new tech for buyers, as well, like full-LED headlights. The interior upgrades are equally subtle.

Since BMW reintroduced the 6 Series line back in 2003, the big two-door has happily sat as the brand's de facto grand tourer. That will allegedly change come 2017, as Car is reporting that Munich will put its coupe on a diet with the so-called G15 generation, allowing the 6 to go after the likes of Porsche.

The wheels are one of the first things you notice when checking out the 2015 BMW Alpina B6 xDrive Gran Coupe. The 20-inch aluminum alloy rollers have 21 spokes that spray out from their hubs, creating one of Alpina's signature design features. But there's also plenty of function to go along with the stylistic form of this hotted-up BMW 6 Series Gran Coupe.

Truth be told, I've never really found the modern BMW 6 Series to be a particularly attractive car, in Coupe, Convertible, or sedan Gran Coupe forms. This current generation certainly looks a whole lot better than the Bangle-fied Six that came before it to my eyes, but on the whole, I find much of the car's design to be fussy and awkward. There's a new 6 Series on the way, scheduled to arrive sometime in 2017 or 2018, but to hold us over until then, BMW is freshening its current range, as eviden

Not content with a bit part on the options sheet, high-end sound gets a starring role on the BMW Individual 6 Series Gran Coupe Bang & Olufsen Edition. There's no technical difference between the 1,200-watt, 16-speaker High End Surround Sound System in this run of 6 Series Gran Coupes and the $3,700 system you can order as an option on the standard Gran Coupe, but the special edition gets brushed black aluminum finish speaker grilles, a first for the range.

BMW has released its mile-long list of model changes for 2015. It's mostly comprised of tiny tweaks to options packages, pricing or trim colors, but there are a few interesting new features in there too. One thing all buyers will notice is that as of July 1, the company's destination charge increases by $25, to $950 for all of its models.

Alpina has been lovingly modifying BMWs for half a century, but as we learned during a tour of the company's HQ in Buchloe, Germany, Alpina has been in the wine distribution business for nearly as long. The company has an estimated million bottles on reserve in two warehouses and a beautiful wine cellar/tasting room on property in western Bavaria, just yards from where its 1,500 hand-crafted automobiles per year are produced.

Almost one month ago, we reported on a BMW investigation into a potentially defective bolt that lived in the company's VANOS variable valve timing system. At that point, the potential recall was seemingly limited to Chinese-market cars; the company was filing a recall application with Chinese officials.

Whether it's an owl trapped in a Ford or a stripper truck in Tampa, the Sunshine State that is Florida never ceases to amaze us. And this time it's given us what could very well be the most overt way a car has ever been used to pick up chicks.

Just to be clear, the owner of this BMW M6 isn't ready for another one. He and his friend destroyed the V10-powered coupe in anger at the entrance to the Frankfurt Motor Show in a decidedly public fashion. Bild and GT Spirit report that the owner was angry over mysterious quality and reliability issues that he claims BMW wasn't able to fix. What we have here, folks, is claimed to be a very expensive lemon.

The leaked facelift images and the Competition Package rumors were accurate: These are the 2014 BMW M5 and M6 models, with exactly three nips and four tucks distinguishing them from their outgoing counterparts, as well as an expected track-day overhaul package. The standard M5 boasts 560 horsepower from its 4.4-liter, twin-turbo V8, and the new Competition Package ups that to a preliminary 575 hp, with shifting options remaining the seven-speed dual-clutch transmission or the six-speed manual. U

BMW shoppers looking for sportier and more luxurious versions of the 6 Series and 6 Series Gran Coupe without stepping up to the mighty M6 now have something new to check out. Offered on all versions of the 640i and 650i for the 2014 model year, the company's M Sport Edition package goes on sale in June with prices starting at $80,625 for the 640i Coupe, $83,325 for the 640i Gran Coupe and $87,925 for the 640i Convertible (*all prices including $925 for destination).

Alpina is getting more and more ink because of because of that rolling cannonade known as the B7 and its closer ties with BMW. The company's tuning business dates to 1962 when Burkard Bovensiepen began fiddling with Weber carburetors, then his company began racing in 1968 and was eventually certified as an automaker in 1983.

Attempting to at least stay abreast of the spy shots, spy video and photographs of the M6 Gran Coupe, BMW has released a small set of its own images. They don't give much away concerning the 560-horsepower four-door 6er, but this is one of those situations where we already know everything there is to know. We're just waiting for the guilty party to officially confess.

BMW has been pretty busy with cars wearing a "6" this year following the rollouts of the new 6 Series Gran Coupe and, more recently, the high-performance M6. Now the automaker is getting ready to introduce two low-volume variants of the 6 Series Coupe and the X6 crossover. The 2013 BMW 650i Coupe Frozen Silver Edition and 2013 BMW Individual X6 Performance Edition are both limited-production models aimed at showing off exclusive tailoring available through BMW Individual.